CN105755904A - Nano qualitative filter paper and preparing method thereof - Google Patents

Nano qualitative filter paper and preparing method thereof Download PDF

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Publication number
CN105755904A
CN105755904A CN201610270221.XA CN201610270221A CN105755904A CN 105755904 A CN105755904 A CN 105755904A CN 201610270221 A CN201610270221 A CN 201610270221A CN 105755904 A CN105755904 A CN 105755904A
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China
Prior art keywords
filter paper
nano
qualitative filter
nanometer
pulp
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Pending
Application number
CN201610270221.XA
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Chinese (zh)
Inventor
吴安波
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Hangzhou Special Paper Industry Co Ltd
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Hangzhou Special Paper Industry Co Ltd
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Priority to CN201610270221.XA priority Critical patent/CN105755904A/en
Publication of CN105755904A publication Critical patent/CN105755904A/en
Pending legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/08—Filter paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/14—Polyalkenes, e.g. polystyrene polyethylene
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/08—Dispersing agents for fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/12—Defoamers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D21H21/20—Wet strength agents

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

The invention discloses nano qualitative filter paper.The nano qualitative filter paper is prepared from, by weight, 30-80 parts of bamboo pulp, 5-40 parts of herba junci setchuensis pulp, 30-80 parts of softwood pulp, 0.2-5 parts of lignin, 1-5 parts of nano-crystalline cellulose, 20-40 parts of water-soluble polyvinyl alcohol fiber, 0.5-3 parts of a wet-strength agent, 0.2-0.8 part of a dispersing agent and 0.1-0.3 part of a defoaming agent.All the pulp is treated through an ultrahigh-pressure microjet nano dispersion machine to obtain cellulose nanofibers, and the cellulose nanofibers are harder and lighter than iron and can realize paper sheet light weight when used in the filter paper industry; the added nano-crystalline cellulose can be tightly combined with pulp fibers, and therefore binding force between pulp fibers is increased.

Description

Nanometer qualitative filter paper and preparation method thereof
Technical field
The present invention relates to filter paper technical field, be specifically related to a kind of nanometer qualitative filter paper and preparation method thereof.
Background technology
Qualitative filter paper is a kind of for detecting the filter paper needed for material composition, is mainly used in laboratory.Use in the market Qualitative filter paper uses single wood pulp as raw material, and the strainability causing qualitative filter paper is poor, poor water resistance, through the short time It is run-down that filtration is just easily caused paper, and page is the most thick and heavy.
Summary of the invention
The invention aims to solve the deficiencies in the prior art, it is provided that a kind of strainability is good, water-tolerant, service life Long, page light-weighted nanometer qualitative filter paper.
For realizing goal of the invention, the technical scheme that the present invention takes is:
Nanometer qualitative filter paper, counts by weight, including following components:
As preferably, described dispersant is polyoxyethylene and/or anion-polyacrylamide.
As preferably, described defoamer is selected from one or more of butanol, octanol, silicone oil or pine tar.
As preferably, described bamboo pulp is the bamboo pulp obtained through the screen cloth of 200 mesh.
As preferably, the quantification of 40 ± 2g/ of described nanometer qualitative filter paper, thickness is 1.0 ± 0.1mm.
Water-soluble polyvinyl alcohol fibers is swollen in cold water, according to the difference of acetalation degree, and can be in the water of about 60-80 DEG C Melted, therefore can be formed between fiber when dry and effectively cohere, typically use in joining the paper copying more synthetic fibers；Should The retention of threadiness glue is high, can play cohesive action, thus improve paper strength between plurality of fibers, and to becoming paper Air permeability and the Index Influence such as absorbent little.
Present invention additionally comprises the preparation method of above-mentioned nanometer qualitative filter paper, comprise the steps:
1) by dosage, bamboo pulp, Chinese alpine rush slurry and softwood pulp are added water and carry out being blended in super-voltage micro jet nano-dispersed machine Carrying out under effect peeling off, tearing between a diameter of 15～100nm, length is at 200nm～the cellulose nano-fibrous slurry of 20 microns Material, in described slurry, the percentage by weight of containing cellulose nanofiber is 10～30%；
2) being dispersed in water by the nano cellulose crystal of dosage and obtain stable nano cellulose crystal colloid, wherein this is received The mass fraction of the nano cellulose crystal of rice cellulose crystals colloid is 3～8%；
3) the nano cellulose crystal colloid that the cellulose nano-fibrous slurry of step 1 gained, step 2 obtained, water-soluble poly Alcohol fibers, lignin, dispersant, defoamer and wet strength agent carry out making beating in beater and obtain pulping, beating of pulping Slurry concentration is 3.5-4.5%, beating degree 30-50 ° SR, the pulping of weight in wet base 6-8g；
4) by step 3) online of the pulping condition routinely that obtains manufactures paper with pulp and makes, squeezes and dry, it is thus achieved that nanometer qualitative filter paper；
5) nanometer qualitative filter paper is crimped, cuts, it is thus achieved that finished paper.
Various slurries are obtained cellulose nano-fibrous by super-voltage micro jet nano-dispersed machine by the present invention, this cellulose Nanowire Dimension has the characteristic more firmly lighter than iron, can realize page lightweight for filter paper industry.
Bamboo pulp is the paper pulp of moderate fiber length, carefully soft.Sheet pulp bulk, tearability are high, pop strength and tensile strength Relatively low, there is higher mechanical strength；Chinese alpine rush slurry is clean tough, and fiber is elongated, has superior intertexture power, becomes paper finer and smoother flat Sliding, mechanical strength is good；Nano cellulose crystal (nano-crystalline cellulose, NCC), its particle diameter is typically 30～100 Between nm, specific surface area is very big, can be dispersed in dicyandiamide solution steadily in the long term and form accurate alternately dispersion, disperse in water Form stable NCC colloid, nano-cellulose light weight, excellent in mechanical performance, light transmission, its biological degradability and recyclability Also it is that other reinforcing materials cannot be compared, before NCC has well development as enhancing, retention, filter aid in pulping and paper-making Scape.
Detailed description of the invention
The invention is further illustrated by the following examples, but the present invention is not limited solely to following example.
Embodiment 1
Nanometer qualitative filter paper, counts by weight, including bamboo pulp: 30 parts, and Chinese alpine rush is starched: 5 parts, softwood pulp: 30 parts, Lignin: 0.2 part, nano cellulose crystal: 1 part, water-soluble polyvinyl alcohol fibers: 20 parts, dispersant: 0.2 part, froth breaking Agent: 0.1 part, wet strength agent: 0.5 part.
Described dispersant is polyoxyethylene；Described defoamer is butanol；Described bamboo pulp is to obtain through the screen cloth of 200 mesh Bamboo pulp.
The preparation method of above-mentioned nanometer qualitative filter paper, comprises the steps:
1) by dosage, bamboo pulp, Chinese alpine rush slurry and softwood pulp are added water and carry out being blended in super-voltage micro jet nano-dispersed machine Carrying out under effect peeling off, tearing between a diameter of 15～100nm, length is at 200nm～the cellulose nano-fibrous slurry of 20 microns Material, in described slurry, the percentage by weight of containing cellulose nanofiber is 10%；
2) being dispersed in water by the nano cellulose crystal of dosage and obtain stable nano cellulose crystal colloid, wherein this is received The mass fraction of the nano cellulose crystal of rice cellulose crystals colloid is 8%；
3) by step 1) the cellulose nano-fibrous slurry of gained, step 2) the nano cellulose crystal colloid, water-soluble that obtains Property vinal, lignin, dispersant, defoamer and wet strength agent carry out making beating in beater and obtain pulping, pulping Beating consistency be 3.5%, 30 ° of SR of beating degree, the pulping of weight in wet base 6g；
4) by step 3) online of the pulping condition routinely that obtains manufactures paper with pulp and makes, squeezes and dry, it is thus achieved that nanometer qualitative filter paper；
5) nanometer qualitative filter paper is crimped, cuts, it is thus achieved that finished paper.
Embodiment 2
Nanometer qualitative filter paper, counts by weight, including bamboo pulp: 80 parts, and Chinese alpine rush is starched: 40 parts, softwood pulp: 80 parts, Lignin: 5 parts, nano cellulose crystal: 5 parts, water-soluble polyvinyl alcohol fibers: 40 parts, dispersant: 0.8 part, defoamer: 0.3 part, wet strength agent: 3 parts.
Described dispersant is polyoxyethylene；Described defoamer is silicone oil；Described bamboo pulp is to obtain through the screen cloth of 200 mesh Bamboo pulp.
The preparation method of above-mentioned nanometer qualitative filter paper, comprises the steps:
1) by dosage, bamboo pulp, Chinese alpine rush slurry and softwood pulp are added water and carry out being blended in super-voltage micro jet nano-dispersed machine Carrying out under effect peeling off, tearing between a diameter of 15～100nm, length is at 200nm～the cellulose nano-fibrous slurry of 20 microns Material, in described slurry, the percentage by weight of containing cellulose nanofiber is 30%；
2) being dispersed in water by the nano cellulose crystal of dosage and obtain stable nano cellulose crystal colloid, wherein this is received The mass fraction of the nano cellulose crystal of rice cellulose crystals colloid is 8%；
3) the nano cellulose crystal colloid that the cellulose nano-fibrous slurry of step 1 gained, step 2 obtained, water-soluble poly Alcohol fibers, lignin, dispersant, defoamer and wet strength agent carry out making beating in beater and obtain pulping, beating of pulping Slurry concentration is 4.5%, 50 ° of SR of beating degree, the pulping of weight in wet base 8g；
4) by step 3) online of the pulping condition routinely that obtains manufactures paper with pulp and makes, squeezes and dry, it is thus achieved that nanometer qualitative filter paper；
5) nanometer qualitative filter paper is crimped, cuts, it is thus achieved that finished paper.
Embodiment 3
Nanometer qualitative filter paper, counts by weight, including bamboo pulp: 480 parts, and Chinese alpine rush is starched: 25 parts, softwood pulp: 50 parts, Lignin: 2.5 parts, nano cellulose crystal 3 parts, water-soluble polyvinyl alcohol fibers: 29 parts, dispersant: 0.5 part, defoamer: 0.2 part, wet strength agent: 2.0 parts.
Described dispersant is polyacrylamide；Described defoamer is pine tar；Described bamboo pulp is to obtain through the screen cloth of 200 mesh The bamboo pulp arrived.
The preparation method of above-mentioned nanometer qualitative filter paper, comprises the steps:
1) by dosage, bamboo pulp, Chinese alpine rush slurry and softwood pulp are added water and carry out being blended in super-voltage micro jet nano-dispersed machine Carrying out under effect peeling off, tearing between a diameter of 15～100nm, length is at 200nm～the cellulose nano-fibrous slurry of 20 microns Material, in described slurry, the percentage by weight of containing cellulose nanofiber is 20%；
2) being dispersed in water by the nano cellulose crystal of dosage and obtain stable nano cellulose crystal colloid, wherein this is received The mass fraction of the nano cellulose crystal of rice cellulose crystals colloid is 6%；
3) the nano cellulose crystal colloid that the cellulose nano-fibrous slurry of step 1 gained, step 2 obtained, water-soluble poly Alcohol fibers, lignin, dispersant, defoamer and wet strength agent carry out making beating in beater and obtain pulping, beating of pulping Slurry concentration is 4.0%, 35 ° of SR of beating degree, the pulping of weight in wet base 7g；
4) by step 3) online of the pulping condition routinely that obtains manufactures paper with pulp and makes, squeezes and dry, it is thus achieved that nanometer qualitative filter paper；
5) nanometer qualitative filter paper is crimped, cuts, it is thus achieved that finished paper.
The nanometer qualitative filter paper technical indicator that above-described embodiment prepares is as shown in the table:
Project Unit Technology requirement Embodiment 1 Embodiment 2 Embodiment 3
Quantitatively g/m2 40±2g/m2 41 40 42
Thickness mm 1.0±0.1mm 1.1 1.0 1.0
Bursting strength kPa ≥120 179 178 181
Maximum diameter of hole μm - 32 31 35
Average pore size μm - 24 23 22
Filter efficiency μm - 11～20 11～20 11～20

Claims (6)

1. nanometer qualitative filter paper, counts by weight, including following components:
Nanometer qualitative filter paper the most according to claim 1, it is characterised in that described dispersant be polyoxyethylene and / or anion-polyacrylamide.
Nanometer qualitative filter paper the most according to claim 1, it is characterised in that described defoamer selected from butanol, One or more of octanol, silicone oil or pine tar.
Nanometer qualitative filter paper the most according to claim 1, it is characterised in that described bamboo pulp is through 200 purposes The bamboo pulp that screen cloth obtains.
Nanometer qualitative filter paper the most according to claim 1, it is characterised in that determining of described nanometer qualitative filter paper Amount is 40 ± 2g/, and thickness is 1.0 ± 0.1mm.
6. the preparation method of the nanometer qualitative filter paper that a kind is prepared as described in claim 1 to 5 is arbitrary, it is characterised in that Comprise the steps:
1) by dosage, bamboo pulp, Chinese alpine rush slurry and softwood pulp are added water and carry out being blended in super-voltage micro jet and receive Carrying out peeling off, tearing between a diameter of 15～100nm under the effect of rice dispersion machine, length is at 200nm～20 The cellulose nano-fibrous slurry of micron, in described slurry, the percentage by weight of containing cellulose nanofiber is 10～30%；
2) nano cellulose crystal of dosage be dispersed in water obtain stable nano cellulose crystal colloid, Wherein the mass fraction of the nano cellulose crystal of this nano cellulose crystal colloid is 3～8%；
The nano cellulose crystal colloid that 3) the cellulose nano-fibrous slurry of step 1 gained, step 2 obtained, Water-soluble polyvinyl alcohol fibers, lignin, dispersant, defoamer and wet strength agent are pulled an oar in beater Obtaining pulping, the beating consistency of pulping is 3.5-4.5%, beating degree 30-50 ° SR, the pulping of weight in wet base 6-8g；
4) by step 3) online of the pulping condition routinely that obtains manufactures paper with pulp and makes, squeezes and dry, it is thus achieved that nanometer Qualitative filter paper；
5) nanometer qualitative filter paper is crimped, cuts, it is thus achieved that finished paper.
CN201610270221.XA 2016-04-26 2016-04-26 Nano qualitative filter paper and preparing method thereof Pending CN105755904A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107190556A (en) * 2017-06-12 2017-09-22 杭州特种纸业有限公司 Qualitative filter paper and its preparation method and application
CN111691220A (en) * 2020-06-23 2020-09-22 杭州特种纸业有限公司 In-vitro life detection material and preparation method thereof
CN114575194A (en) * 2022-02-21 2022-06-03 浙江凯恩新材料有限公司 Magnetic material filter paper and production process and application thereof
CN116377755A (en) * 2023-01-16 2023-07-04 杭州特种纸业有限公司 Light medium-speed quantitative filter paper and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102121206A (en) * 2010-12-21 2011-07-13 张金 High-air-permeability paper pulp and preparation method and application thereof
CN103911911A (en) * 2014-03-20 2014-07-09 杭州特种纸业有限公司 Qualitative filter paper and its making technology
CN103911910A (en) * 2014-03-20 2014-07-09 杭州特种纸业有限公司 Plant oil filter paper
CN104831586A (en) * 2015-05-11 2015-08-12 杭州特种纸业有限公司 Solidified engine oil filter paper used for heavy loads as well as preparation method and application thereof
CN105113320A (en) * 2015-07-08 2015-12-02 浙江理工大学 Method for improving strength of wastepaper fibers based on nanometer microcrystalline cellulose

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102121206A (en) * 2010-12-21 2011-07-13 张金 High-air-permeability paper pulp and preparation method and application thereof
CN103911911A (en) * 2014-03-20 2014-07-09 杭州特种纸业有限公司 Qualitative filter paper and its making technology
CN103911910A (en) * 2014-03-20 2014-07-09 杭州特种纸业有限公司 Plant oil filter paper
CN104831586A (en) * 2015-05-11 2015-08-12 杭州特种纸业有限公司 Solidified engine oil filter paper used for heavy loads as well as preparation method and application thereof
CN105113320A (en) * 2015-07-08 2015-12-02 浙江理工大学 Method for improving strength of wastepaper fibers based on nanometer microcrystalline cellulose

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107190556A (en) * 2017-06-12 2017-09-22 杭州特种纸业有限公司 Qualitative filter paper and its preparation method and application
CN111691220A (en) * 2020-06-23 2020-09-22 杭州特种纸业有限公司 In-vitro life detection material and preparation method thereof
CN114575194A (en) * 2022-02-21 2022-06-03 浙江凯恩新材料有限公司 Magnetic material filter paper and production process and application thereof
CN116377755A (en) * 2023-01-16 2023-07-04 杭州特种纸业有限公司 Light medium-speed quantitative filter paper and preparation method thereof

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Address after: 311407, Zhejiang City, Hangzhou province Fuyang deer Hill Street Industrial Zone on the top

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